APSIPA Transactions on Signal and Information Processing > Vol 8 > Issue 1

A comprehensive study of the rate-distortion performance in MPEG point cloud compression

Evangelos Alexiou, Multimedia Signal Processing Group, École Polytechnique Fédérale de Lausanne, Switzerland, evangelos.alexiou@epfl.ch , Irene Viola, Multimedia Signal Processing Group, École Polytechnique Fédérale de Lausanne, Switzerland, Tomás M. Borges, Universidade de Brasília, Brazil, Tiago A. Fonseca, Gama Engineering College, Universidade de Brasília, Brazil, Ricardo L. de Queiroz, Universidade de Brasília, Brazil, Touradj Ebrahimi, Multimedia Signal Processing Group, École Polytechnique Fédérale de Lausanne, Switzerland
 
Suggested Citation
Evangelos Alexiou, Irene Viola, Tomás M. Borges, Tiago A. Fonseca, Ricardo L. de Queiroz and Touradj Ebrahimi (2019), "A comprehensive study of the rate-distortion performance in MPEG point cloud compression", APSIPA Transactions on Signal and Information Processing: Vol. 8: No. 1, e27. http://dx.doi.org/10.1017/ATSIP.2019.20

Publication Date: 12 Nov 2019
© 2019 Evangelos Alexiou, Irene Viola, Tomás M. Borges, Tiago A. Fonseca, Ricardo L. de Queiroz and Touradj Ebrahimi
 
Subjects
 
Keywords
Point cloudsQuality assessmentQuality metricsRendererCompressionBenchmarkingDatasetRate allocation
 

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This is published under the terms of the Creative Commons Attribution licence.

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In this article:
I. INTRODUCTION 
II. RELATED WORK 
III. RENDERER AND EVALUATION FRAMEWORK 
IV. TEST SPACE AND CONDITIONS 
V. EXPERIMENT 1: SUBJECTIVE AND OBJECTIVE BENCHMARKING OF MPEG TEST CONDITIONS 
VI. EXPERIMENT 2: RATE ALLOCATION OF TRISOUP GEOMETRY ENCODING MODULE 
VII. EXPERIMENT 3: RATE ALLOCATION FOR GEOMETRY AND COLOR ENCODING MODULES 
VIII. CONCLUSIONS 

Abstract

Recent trends in multimedia technologies indicate the need for richer imaging modalities to increase user engagement with the content. Among other alternatives, point clouds denote a viable solution that offers an immersive content representation, as witnessed by current activities in JPEG and MPEG standardization committees. As a result of such efforts, MPEG is at the final stages of drafting an emerging standard for point cloud compression, which we consider as the state-of-the-art. In this study, the entire set of encoders that have been developed in the MPEG committee are assessed through an extensive and rigorous analysis of quality. We initially focus on the assessment of encoding configurations that have been defined by experts in MPEG for their core experiments. Then, two additional experiments are designed and carried to address some of the identified limitations of current approach. As part of the study, state-of-the-art objective quality metrics are benchmarked to assess their capability to predict visual quality of point clouds under a wide range of radically different compression artifacts. To carry the subjective evaluation experiments, a web-based renderer is developed and described. The subjective and objective quality scores along with the rendering software are made publicly available, to facilitate and promote research on the field.

DOI:10.1017/ATSIP.2019.20